package com.atguigu.gulimall.ware.service.impl;

import com.alibaba.nacos.client.utils.StringUtils;
import com.atguigu.common.utils.R;

import com.atguigu.gulimall.ware.feign.ProductFeignService;
import com.atguigu.gulimall.ware.vo.SkuHasStockVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.ware.dao.WareSkuDao;
import com.atguigu.gulimall.ware.entity.WareSkuEntity;
import com.atguigu.gulimall.ware.service.WareSkuService;


@Service("wareSkuService")
public class WareSkuServiceImpl extends ServiceImpl<WareSkuDao, WareSkuEntity> implements WareSkuService {

    @Autowired
    WareSkuDao wareSkuDao;
    @Autowired
    ProductFeignService productFeignService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {

        /**
         *skuId: 1
         * wareId: 2
         *
         */
        QueryWrapper<WareSkuEntity> queryWrapper = new QueryWrapper<>();
        String skuId = (String) params.get("skuId");
        if(! StringUtils.isEmpty(skuId)){
            queryWrapper.eq("sku_id",skuId);
        }

        String wareId = (String) params.get("wareId");
        if(! StringUtils.isEmpty(wareId)){
            queryWrapper.eq("ware_id",wareId);
        }
        IPage<WareSkuEntity> page = this.page(
                new Query<WareSkuEntity>().getPage(params),
                queryWrapper

        );

        return new PageUtils(page);
    }

    @Override
    public void addStock(Long skuId, Long wareId, Integer skuNum) {

        //1.判断如果还没有这个库存记录新增
        List<WareSkuEntity> entities = wareSkuDao.selectList(new QueryWrapper<WareSkuEntity>().eq("sku_id", skuId).eq("ware_id", wareId));
       if(entities == null || entities.size()== 0){
           WareSkuEntity skuEntity = new WareSkuEntity();
           skuEntity.setSkuId(skuId);
           skuEntity.setStock(skuNum);
           skuEntity.setWareId(wareId);
           skuEntity.setStockLocked(0);
           //TODO 远程查询sku的名字,如果失败，整个事务无需回滚
           //1.自己catch异常
           //TODO 还可以用什么办法让异常出现以后不回滚？高级部门在讲
           try{
               R info = productFeignService.info(skuId);
               Map<String,Object> data = (Map<String, Object>) info.get("skuInfo");

               if(info.getCode() == 0){
                   skuEntity.setSkuName((String) data.get("skuName"));
               }
           }catch (Exception e){

           }


           wareSkuDao.insert(skuEntity);
       }else{
           wareSkuDao.addStock(skuId,wareId,skuNum);
       }


    }

    /**
     * 这里存过库存数量
     * SELECT SUM(stock - stock_locked) FROM `wms_ware_sku` WHERE sku_id = 1
     */
    @Override
    public List<SkuHasStockVo> getSkusHasStock(List<Long> skuIds) {

        List<SkuHasStockVo> vos = skuIds.stream().map(sku -> {
            SkuHasStockVo vo = new SkuHasStockVo();
            //查询当前sku的总库存量
            Long count = baseMapper.getSkusHasStock(sku);
            vo.setSkuId(sku);
            vo.setHasStock(null == count ? false : count > 0);
            return vo;
        }).collect(Collectors.toList());
        return vos;
    }

}